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    Bone Drug May Extend Lives of Young Women With Breast Cancer

    Study: Premenopausal Women Given Zometa 37% Less Likely to Die
    WebMD Health News
    Reviewed by Louise Chang, MD

    Dec. 9, 2011 (San Antonio) -- A drug given to protect bones during breast cancer treatment extended the lives of young women with the disease, researchers report.

    In a study of more than 1,800 premenopausal women, those given the bone-strengthening drug Zometa along with their cancer drugs were 37% less likely to die over a seven-year period than those who received standard therapy alone.

    In 2008, the same researchers reported that women who got Zometa were less likely to have their cancer come back. At that point, the women had been followed for four years since starting treatment.

    "Now, with seven years of follow-up, we see there is long-lasting benefit in term of both recurrences and survival," says researcher Michael Gnant, MD, of the Medical University of Vienna in Austria.

    A total of 33 of 900 women given Zometa died vs. 49 of 903 women not given the drug.

    Although some doctors say the research is too inconsistent at this point to declare Zometa an anti-cancer drug, Gnant tells WebMD the degree of benefit seen with Zometa is comparable to that of many chemotherapy drugs.

    He presented the findings here at the San Antonio Breast Cancer Symposium. Gnant consults for Novartis, which makes Zometa and helped fund the study.

    ‘A New Standard of Care’

    The premenopausal women in the study had early-stage breast cancer that was fueled by hormones, which promote the growth of about 66% of breast cancers.

    All had surgery to remove their tumors and were taking hormone-blocking drug treatments that made them menopausal. Half also were given infusions of Zometa once every six months for three years.

    The most common side effects were bone and joint pain and fever. There were no cases of kidney failure or jawbone death, the major problems that have been linked to Zometa and other drugs in its class, called bisphosphonates.

    Gnant says he will be offering Zometa to all of his premenopausal patients on hormone-blocking drugs.

    "It’s a new standard of care [for such patients]," says James Ingle, MD, a breast cancer specialist at the Mayo Clinic in Rochester, Minn. Ingle was charged with putting the study's findings into perspective for doctors at the meeting.

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